Residents and outdoor enthusiasts heading into Montana’s high country this weekend are being urged to prepare for potentially life-threatening winter conditions — despite it being the middle of summer.
A Winter Weather Advisory is in effect from midnight Sunday through noon Monday for several popular mountain regions, including the Gallatin and Madison County Mountains, Centennial Mountains, Northwest Beaverhead County, and the Ruby and Southern Beaverhead Mountains.
Forecasters warn that wet snow will begin developing overnight Sunday, with accumulations of up to 4 inches possible above 6,500 feet. Snow levels are expected to drop to their lowest point during the overnight and early morning hours — significantly increasing the danger for anyone camped in high-elevation or backcountry areas.
Popular recreation destinations and travel corridors are directly in the advisory zone, including Big Sky, West Yellowstone, Wisdom, Wise River, Targhee Pass, Monida Pass, Big Hole Pass, Raynolds Pass, Chief Joseph Pass and Dewey.
Officials warn that wet, cold conditions dramatically increase the risk of hypothermia — especially for campers in lightweight summer gear. Heavy, wet snow can also bring down tree branches, block forest roads, collapse tents, and damage camping equipment without warning.
What to bring if you’re heading into the mountains
- Winter clothing and waterproof gear
- Tire chains and emergency car supplies
- Blankets, extra food and water
- Flashlight, shovel and first aid kit
- Emergency communication device
The advisory remains active through noon Monday. Conditions may be updated if snowfall totals or storm impacts increase. Anyone already in the backcountry should make contingency plans now and not wait for conditions to worsen before taking action.
